package com.lbw.facade;

/**
 * @author lbw
 * @version 1.0
 * @date 2021/6/6 14:01
 */
public class Stereo {
    private final static Stereo INSTANCE = new Stereo();

    private Stereo() {
    }

    public static Stereo getInstance() {
        return INSTANCE;
    }

    public void on() {
        System.out.println("Stereo on");
    }

    public void off() {
        System.out.println("Stereo off");
    }

    public void up() {
        System.out.println("Stereo up");
    }
}
